This paper describes experimental and analytical studies of the dependence of tire friction on the surface roughness of pavement. Abrasive papers were adopted as representative of the microscopic surface roughness of pavement surfaces. The rolling/sliding friction of the tire tread rubber against these abrassive papers were measured at low slip velocities. Experimental results indicated that rolling/sliding frictional characteristics depended on the surface roughness. In order to examine the interfacial phenomena between rubber and the abrasive papers, real contact length, partial slip, and apparent friction coefficient under vertical load and tangential force were analyzed with two-dimensional explicit finite element analysis in which slip-velocity-dependent frictional coefficients were considered. Finite element method results indicated that the sum of real contact area and local partial slip were larger for finer surfaces under the same normal and tangential forces. In addition, the velocity-dependent friction enhanced local slip, where the dependence of local slip on surface roughness was pronounced. It proved that rolling/sliding friction at low slip ratio was affected by local frictional behavior at microslip regions at asperity contacts.


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    Title :

    Contact analysis of tire tread rubber on flat surface with microscopic roughness


    Additional title:

    Kontaktanalyse des Reifenlaufflächen-Gummis auf ebener Oberfläche mit mikroskopischer Rauheit


    Contributors:
    Kuwajima, M. (author) / Koishi, M. (author) / Sugimura, J. (author)


    Publication date :

    2006


    Size :

    19 Seiten, 18 Bilder, 1 Tabelle, 25 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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